There are many of us here who make a damn fine living in the utility field---and I never considered it to not be "mainstream aviation".
Gordy has hit the nail on the head & maybe that's the answer right there - It should be a pre-requisite for utility pilots to have tattoos!
FH1100 - I understand where you're coming from with expansive body art & if you don't like it then it's your right not to put up with it, I suppose I'm just a little more forgiving of people who have discrete tattoos. I don't judge people for having tattoos, but I do judge them based on what that tattoo is so we both have our criteria.
Although my first impression of a person would be altered on seeing a tattoo, if I had known them for years as a competent pilot then found out they had a tattoo I would consider that to be a learning process on my criteria for judging people rather than a cut & dried case of "now I have to fire him".